[Bug c++/68348] [6 regression] ICE: segfault in cxx_eval_constant_expression at cp/constexpr.c:3172

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68348

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
A bit shorter:

struct C {
  constexpr C() : w(), x(), y() {}
  constexpr double fn() const noexcept;
  double w;
  double x;
  double y;
};
constexpr double C::fn() const noexcept { return w; }
C foo()
{
  C c;
  c.fn ();
  return c;
}